The BZX584C9V1 from Micro Commercial Components is a Zener Diode with Zener Voltage 8.5 to 9.6 V, Zener Current 5 mA, Voltage Forward 0.9 V, Current 1 mA, Current Reverse Reverse Leakage Current:- 0.5 uA. More details for BZX584C9V1 can be seen below.